Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
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Arjuna (Terminalia arjuna) is an Ayurvedic cardiac herb containing arjunic acid and arjunolic acid that strengthens heart muscle function. Its tannins and glycosides improve cardiac contractility while reducing cholesterol and blood pressure through endothelial function enhancement.
Reported Benefits (Provisional)
Origin & History
Arjuna is derived from the bark of the Terminalia arjuna tree, native to India. The bark is harvested, dried, and ground into a powder for medicinal use.
Research Narrative (Provisional)
Several studies, including RCTs, have shown Arjuna's potential benefits for heart health, including improving cardiac function and reducing blood pressure.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Arjuna bark (Terminalia arjuna) contains a range of bioactive compounds, macronutrients, and micronutrients. Macronutrient composition per 100g of dried bark powder: carbohydrates ~60-65g (primarily tannins and glycosides), crude fiber ~15-20g, protein ~3-5g, fat ~1-2g, moisture ~8-10g. Key bioactive compounds include: glycosides (arjunoside I, II, III, IV; arjunin) at ~1-2% of dry weight; triterpene saponins including arjunic acid (~0.5-1%), arjunolic acid (~1.5-2%), arjungenin, and terminic acid; flavonoids including arjunone, arjunolone, and luteolin at ~0.3-0.8%; tannins (pyrogallol-type) at approximately 8-25% of dry weight including ellagic acid (~0.5-1%) and gallic acid (~0.3-0.7%). Minerals per 100g: calcium ~480-500mg, magnesium ~200-230mg, zinc ~3-5mg, copper ~1-2mg, iron ~25-30mg, potassium ~300-350mg. Phytosterols including beta-sitosterol (~0.1-0.3%) contribute to cholesterol-lowering activity. Co-enzyme Q10 analogs have been detected in trace amounts. Bioavailability notes: tannin-bound minerals show reduced bioavailability (~20-30% absorption); co-administration with black pepper (piperine) increases flavonoid absorption by ~30-40%; fat-soluble triterpenes benefit from lipid co-ingestion for enhanced absorption; aqueous extracts show higher glycoside bioavailability compared to raw powder.
Reported Mechanism (Provisional)
Arjuna's arjunic acid and arjunolic acid enhance cardiac contractility by increasing calcium sensitivity in heart muscle cells and improving mitochondrial function. The herb's tannins promote nitric oxide release, causing vasodilation and blood pressure reduction. Arjuna also inhibits HMG-CoA reductase enzyme activity, reducing cholesterol synthesis while enhancing antioxidant enzyme activity in cardiac tissue.
Clinical Narrative (Provisional)
Multiple randomized controlled trials with 50-200 participants show arjuna extract (500mg twice daily) improves left ventricular ejection fraction by 15-20% in heart failure patients. A 12-week study of 58 participants demonstrated significant reductions in systolic blood pressure (average 12 mmHg decrease) and LDL cholesterol (15-20% reduction). However, most studies are small-scale and of short duration, requiring larger long-term trials to confirm cardiovascular benefits. Evidence quality is moderate, with consistent positive results across multiple small studies.
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